203211003011 has 4 divisors (see below), whose sum is σ = 203484504432. Its totient is φ = 202937501592.

The previous prime is 203211002963. The next prime is 203211003053. The reversal of 203211003011 is 110300112302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 203211003011 - 2⁶ = 203211002947 is a prime.

It is a super-2 number, since 2×203211003011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203211003811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136749596 + ... + 136751081.

It is an arithmetic number, because the mean of its divisors is an integer number (50871126108).

Almost surely, 2^203211003011 is an apocalyptic number.

203211003011 is a deficient number, since it is larger than the sum of its proper divisors (273501421).

203211003011 is an equidigital number, since it uses as much as digits as its factorization.

203211003011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273501420.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 203211003011 its reverse (110300112302), we get a palindrome (313511115313).

The spelling of 203211003011 in words is "two hundred three billion, two hundred eleven million, three thousand, eleven".